G
Gain
Level: 2
Definition:(1) In RF communications, gain refers to the amount of increase in the strength of a signal after being passed through a signal amplifier. This increase in signal strength is frequently measured in decibels (dB). (2) Gain is also a measure of the amount of signal delivered by an antenna relative or compared to a reference antenna. (3) Less commonly, the ability of sophisticated digital algorithms and signal processors that receive specially modulated signals to increase effectively the desired-to-undesired signal ratio, which results in processing gain. (4) Gain is also used to measure the reflectivity of a projection screen, with a “high-gain” screen reflecting more light at right angles (which makes the image brighter ...
Get Tech Terms, 3rd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
